Warning: You can activate Microsoft Windows Firewall after Office 365 repair is complete.

Step 2: Check Proxy Setting

1) Open Control Panel.Windows 7 : Press Win Key and then Select Control Panel from Right window.Microsoft Windows 8 : Press Windows Key + Q and Type “Control” And Click on it. 2) Open “Internet Options” In Control Panel . 3) Select Connections Tab and then Click On LAN Setting. 4) Turn off “Use a proxy server for your LAN” if its already ON.